Wild Riders in 8th

do we think a unit of 10 (5x2) make a good harassment unit?, supported by 2 groups of 5 glade rider.

I think these units gets a free move at the start of game, so they can whip up the side of the board, (glade guard on the outside to shiled wild riders and fire back at any other fast cav). When wild riders are in position, they could cause some heafty rear damage.. warmachines. flansk etc

Indeed I meant 3x5 which I think grants you the stubborn rule... right?

The unit is pretty hefty in point cost, but still its pretty sick. It will tear down anything thrown at it... But I dont really think it will be competitive, I just like the idea of such a unit. Just image them storming from the woods to slay a unit of invaders!

2 different rules were referenced here, I'll try and clear it up. Any unit with more ranks than the opponent (minimum 5 wide for infantry/cavalry, 3 for the monstrous versions) becomes "Steadfast"- the same effect that Stubborn had in the old rules, except that you are allowed to use the general's leadership. Stubborn now has the effect that the unit is always steadfast regardless of ranks. Steadfast is never guaranteed (unless you have Stubborn) because it is entirely dependent on how many ranks your opponent has. It should be noted that ranks for determining Steadfast, and combat resolution, are now counted at the end of combat, making the rule even less of a guarantee. Also a unit with only a single rank can be steadfast (assuming the opponent has none, as is the case with skirmishers) so long as the first rank has at least 5 models.

The other rule referenced was the "Horde" rule. Any unit with double the width required for a rank bonus is a horde. Hordes get one extra rank of supporting attacks. A unit of 18 Tree Kin ranked 6 wide by 3 deep would get 55 attacks with a champion, plus 6 Stomp attacks. It would be huge point sink, but if it actually got into combat there's not much it couldn't tear up. I don't recommend such a formation, but it might be fun.